MAX1271BEAI Datasheet PDF - Maxim Integrated

General Description

●The MAX1270/MAX1271 are multirange, 12-bit data acquisition systems (DAS) that require only a single +5V supply for operation, yet accept signals at their analog inputs that can span above the power-supply rail and below ground. These systems provide eight analog input channels that are independently software programmable for a variety of ranges: ±10V, ±5V, 0 to +10V, 0 to +5V for the MAX1270; ±VREF, ±VREF/2, 0 to VREF, 0 to VREF/2 for the MAX1271. This range switch ing increases the effective dynamic range to 14 bits and provides the flexibility to interface 4–20mA, ±12V, and ±15V powered sensors directly to a single +5V system.

●Features

●♦ 12-Bit Resolution, 0.5 LSB Linearity

●♦ +5V Single-Supply Operation

●♦ SPI/QSPI and MICROWIRE-Compatible 3-Wire Interface

●♦ Four Software-Selectable Input Ranges

●   MAX1270: 0 to +10V, 0 to +5V, ±10V, ±5V

●   MAX1271: 0 to VREF, 0 to VREF/2, ±VREF, ±VREF/2

●♦ Eight Analog Input Channels

●♦ 110ksps Sampling Rate

●♦ ±16.5V Overvoltage-Tolerant Input Multiplexer

●♦ Internal 4.096V or External Reference

●♦ Two Power-Down Modes

●♦ Internal or External Clock

●♦ 24-Pin Narrow PDIP or 28-Pin SSOP Packages

●Applications

●  Industrial Control Systems

●  Data-Acquisition Systems

●  Battery-Powered

●  Instruments

●  Automatic Testing

●  Robotics

●  Medical Instruments